题目内容
计算
(1)(-25)+34+156+(-65)
(2)-0.5+(-15
)-(-17.5)-|-12
|.
(1)(-25)+34+156+(-65)
(2)-0.5+(-15
1 |
3 |
2 |
3 |
(1)原式=-25-65+34+156
=-90+190
=100;
(2)原式=-0.5+17.5-15
-12
=17-28
=-11.
=-90+190
=100;
(2)原式=-0.5+17.5-15
1 |
3 |
2 |
3 |
=17-28
=-11.
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